I built a simple jig to let me bend the steel cold instead of having to heat it. To try it out I made these coring tools this weekend. The bottom one has a HSS cutter silver soldered to the arm. The middle one has a new Hunter carbide cutter screwed to the tip. The top one has a piece of high Carbon steel welded to it. Here is a detail of the Carbide cutter tip. Mike Hunter will re-tip your existing McNaughton tools with this cutter.
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